Memory Game The Endocrine SystemOnline version Review the organs of the endocrine system and their functions. by Kathy Dilliplane The body's "Master Gland" that controls the other endocrine organs. Thymus Adrenal Glands Regulates blood sugar levels Pineal Gland Thyroid Regulates growth and metabolism Testes Regulates calcium levels in the blood. Increase heart rate during a "Fight or Flight" response Regulates the female reproductive system Pancreas Helps the immune system recognize and fight pathogens Regulate the male reproductive system Produces melatonin to regulate sleep cycles Ovaries Parathyroid Glands Pituitary